Which equation below is a correct equation for work? You may select more than one correct answer, if applicable.
Work/Energy Review

Quiz
•
Physics
•
9th - 12th Grade
•
Hard
Tyler Davenport
Used 5+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
ΔE
FIId
Fdsin(Θ)
mgh
Fdcos(Θ)
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Polly pushes a crate to the right, speeding it up as she pushes it. Which of the following correctly describes the work that Polly does on the crate system? You may select more than one, if appropriate.
Polly does positive work because she is exerting a force in the positive direction (to the right)
Polly does positive work on the crate because she is giving it energy by speeding it up.
Polly does negative work on the crate because the crate has less energy than it should because she is pushing it.
Polly does positive work on the crate because she pushes it in the same direction that it moves.
3.
DROPDOWN QUESTION
1 min • 1 pt
A box is pulled up a rough incline by force F. The unmarked arrow represents the direction of the box's motion. Imagine you are analyzing the box-earth system.
Imagine you are using the equation Fdcos(Θ) to solve for the work done by the following forces. What angle would you use for each?
Force F: (a)
Frictional force: (b)
Normal Force: (c)
4.
DROPDOWN QUESTION
1 min • 1 pt
A box is pulled up a rough incline by force F. The unmarked arrow represents the direction of the box's motion. Imagine you are analyzing the box system.
What kind of work is done by each of the following forces on the box system?
Force F: (a)
Frictional force: (b)
Normal Force: (c)
Gravitational Force: (d)
5.
MATH RESPONSE QUESTION
2 mins • 1 pt
Kendall exerts a 30 N force to the right on a box over a 10 m distance. While this is happening, Louis is exerting a 5 N force on the box in the opposite direction for the same distance. What is the net work done on the box?
Mathematical Equivalence
ON
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following energies are considered mechanical energies? You may choose more than one answer, if applicable.
kinetic energy
gravitational potential energy
chemical energy
elastic potential energy
thermal energy
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Imagine a box sliding down a ramp. What must happen for the box-earth-surface system's total mechanical energy to change? You may sleect more than one answer, if applicable.
An external force does positive work on the system
GPE is converted into KE as it slides down.
Energy in the system is converted into thermal energy.
An external force does negative work on the system.
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